The change of antioxidant enzyme activity in Skeletonema costatum, Heterosigma akashiwo and Alexandrium tamarense under UV-B radiation enhancement were studied.

研究了赤潮异弯藻、亚历山大藻和中肋骨条藻抗氧化酶活性对UV-B辐射增强的响应变化。

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UV radiation appears to diminish the effectiveness of the immune system by changing the activity and distribution of the cells responsible for triggering immune responses.

紫外线辐射似乎会改变触发免疫反应的细胞的活动和分布，从而降低免疫系统的有效性。

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The extended collapse in solar activity these past two years may be precisely the right sort of test, in that it has significantly changed the amount of solar radiation bombarding our planet.

太阳活动在过去的两年发生减弱，这正正符合了上面的实验条件，因为其减弱能大大改变影响地球的太阳辐射。

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The findings of the study, which examined the subjects during just one 50-minute exposure, raise a key question, the researchers said: What, if any, are the long-term consequences of repeated increased brain activity due to exposure to cell phone radiation?

CNN: Cell phone exposure increases brain cell activity